/***************************************************************************

                          -= Yun Sung 8 Bit Games =-

                    driver by   Luca Elia (l.elia@tin.it)


Main  CPU    :  Z80B
Sound CPU    :  Z80A
Video Chips  :  ?
Sound Chips  :  OKI M5205 + YM3812

---------------------------------------------------------------------------
Year + Game         Board#
---------------------------------------------------------------------------
95  Cannon Ball      YS-ROCK-970712 or 940712?
95  Magix / Rock     YS-ROCK-970712 or 940712?
94? Rock Tris        YS-ROCK-940712
---------------------------------------------------------------------------

Notes:

- "Magix" can change title to "Rock" through a DSW
- In service mode press Service Coin (e.g. '9')

To Do:

- Better Sound

***************************************************************************/

#include "driver.h"
#include "cpu/z80/z80.h"
#include "sound/3812intf.h"
#include "sound/msm5205.h"
#include "includes/yunsung8.h"

/***************************************************************************


                            Memory Maps - Main CPU


***************************************************************************/


static WRITE8_HANDLER( yunsung8_bankswitch_w )
{
	yunsung8_state *state = (yunsung8_state *)space->machine->driver_data;

	state->layers_ctrl = data & 0x30;	// Layers enable

	memory_set_bank(space->machine, "bank1", data & 0x07);

	if (data & ~0x37)
		logerror("CPU #0 - PC %04X: Bank %02X\n", cpu_get_pc(space->cpu), data);
}

/*
    Banked Video RAM:

    c000-c7ff   Palette (bit 1 of port 0 switches between 2 banks)

    c800-cfff   Color   (bit 0 of port 0 switches between 2 banks)
    d000-dfff   Tiles   ""
*/

static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0001, 0x0001) AM_WRITE(yunsung8_bankswitch_w)	// ROM Bank (again?)
	AM_RANGE(0x8000, 0xbfff) AM_ROMBANK("bank1")	// Banked ROM
	AM_RANGE(0x0000, 0xbfff) AM_ROM
	AM_RANGE(0xc000, 0xdfff) AM_READWRITE(yunsung8_videoram_r, yunsung8_videoram_w)	// Video RAM (Banked)
	AM_RANGE(0xe000, 0xffff) AM_RAM
ADDRESS_MAP_END


static ADDRESS_MAP_START( port_map, ADDRESS_SPACE_IO, 8 )
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	AM_RANGE(0x00, 0x00) AM_READ_PORT("SYSTEM") AM_WRITE(yunsung8_videobank_w)	// video RAM bank
	AM_RANGE(0x01, 0x01) AM_READ_PORT("P1") AM_WRITE(yunsung8_bankswitch_w)	// ROM Bank + Layers Enable
	AM_RANGE(0x02, 0x02) AM_READ_PORT("P2") AM_WRITE(soundlatch_w)	// To Sound CPU
	AM_RANGE(0x03, 0x03) AM_READ_PORT("DSW1")
	AM_RANGE(0x04, 0x04) AM_READ_PORT("DSW2")
	AM_RANGE(0x06, 0x06) AM_WRITE(yunsung8_flipscreen_w)	// Flip Screen
	AM_RANGE(0x07, 0x07) AM_WRITENOP	// ? (end of IRQ, random value)
ADDRESS_MAP_END



/***************************************************************************


                            Memory Maps - Sound CPU


***************************************************************************/

static WRITE8_DEVICE_HANDLER( yunsung8_sound_bankswitch_w )
{
	msm5205_reset_w(device, data & 0x20);

	memory_set_bank(device->machine, "bank2", data & 0x07);

	if (data != (data & (~0x27)))
		logerror("%s: Bank %02X\n", cpuexec_describe_context(device->machine), data);
}

static WRITE8_HANDLER( yunsung8_adpcm_w )
{
	yunsung8_state *state = (yunsung8_state *)space->machine->driver_data;

	/* Swap the nibbles */
	state->adpcm = ((data & 0xf) << 4) | ((data >> 4) & 0xf);
}



static ADDRESS_MAP_START( sound_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_ROM
	AM_RANGE(0x8000, 0xbfff) AM_ROMBANK("bank2")	// Banked ROM
	AM_RANGE(0xe000, 0xe000) AM_DEVWRITE("msm", yunsung8_sound_bankswitch_w	)	// ROM Bank
	AM_RANGE(0xe400, 0xe400) AM_WRITE(yunsung8_adpcm_w)
	AM_RANGE(0xec00, 0xec01) AM_DEVWRITE("ymsnd", ym3812_w)
	AM_RANGE(0xf000, 0xf7ff) AM_RAM
	AM_RANGE(0xf800, 0xf800) AM_READ(soundlatch_r)	// From Main CPU
ADDRESS_MAP_END




/***************************************************************************


                                Input Ports


***************************************************************************/

/***************************************************************************
                                    Magix
***************************************************************************/

static INPUT_PORTS_START( magix )
	PORT_START("SYSTEM")
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START("P1")
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)	// same as button1 !?
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)

	PORT_START("P2")
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)	// same as button1 !?
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)

	PORT_START("DSW1")
	PORT_SERVICE( 0x01, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x06, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0xe0, 0xe0, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 1C_4C ) )

	PORT_START("DSW2")
	PORT_DIPNAME( 0x01, 0x01, "Title" )
	PORT_DIPSETTING(    0x01, "Magix" )
	PORT_DIPSETTING(    0x00, "Rock" )
	PORT_DIPNAME( 0x02, 0x02, "Unknown 2-1" )	// the rest seems unused
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, "Unknown 2-2" )
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, "Unknown 2-3" )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, "Unknown 2-4" )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, "Unknown 2-5" )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, "Unknown 2-6" )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, "Unknown 2-7" )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
INPUT_PORTS_END


/***************************************************************************
                                Cannon Ball
***************************************************************************/

static INPUT_PORTS_START( cannball )
	PORT_START("SYSTEM")
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START("P1")
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1)
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)

	PORT_START("P2")
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)

	PORT_START("DSW1")
	PORT_SERVICE( 0x01, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x06, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0xe0, 0xe0, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 1C_4C ) )

	PORT_START("DSW2")
	PORT_DIPNAME( 0x01, 0x01, "Unknown 2-0" )
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, "Unknown 2-1" )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x0c, 0x0c, "Bombs" )
	PORT_DIPSETTING(    0x04, "1" )
	PORT_DIPSETTING(    0x08, "2" )
	PORT_DIPSETTING(    0x0c, "3" )
	PORT_DIPSETTING(    0x00, "4" )
	PORT_DIPNAME( 0x10, 0x10, "Unknown 2-4" )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, "Unknown 2-5" )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, "Unknown 2-6" )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, "Unknown 2-7" )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
INPUT_PORTS_END

static INPUT_PORTS_START( cannbalv )
	PORT_INCLUDE(cannball)
	PORT_MODIFY("SYSTEM")
	PORT_BIT(  0x40, IP_ACTIVE_HIGH, IPT_SPECIAL  ) // always activated, otherwise the game resets. a simple check for horizontal / vertical version of the game?
INPUT_PORTS_END

/***************************************************************************
                                    Rock Tris
***************************************************************************/

static INPUT_PORTS_START( rocktris )
	PORT_START("SYSTEM")
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_SERVICE1 ) PORT_IMPULSE(1)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_IMPULSE(1)

	PORT_START("P1")
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)	// same as button1 !?
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)

	PORT_START("P2")
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)	// same as button1 !?
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)

	PORT_START("DSW1")
	PORT_SERVICE( 0x01, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x06, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0xe0, 0xe0, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 1C_4C ) )

	PORT_START("DSW2")
	PORT_DIPNAME( 0x01, 0x01, "Unknown 2-0" )	// the rest seems unused
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, "Unknown 2-1" )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, "Unknown 2-2" )
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, "Unknown 2-3" )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, "Unknown 2-4" )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, "Unknown 2-5" )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, "Unknown 2-6" )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, "Unknown 2-7" )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
INPUT_PORTS_END

/***************************************************************************


                                Graphics Layouts


***************************************************************************/

/* 8x8x4 tiles in 2 roms */
static const gfx_layout layout_8x8x4 =
{
	8,8,
	RGN_FRAC(1,2),
	4,
	{ STEP4(0,1) },
	{ RGN_FRAC(1,2)+1*4,RGN_FRAC(1,2)+0*4,1*4,0*4, RGN_FRAC(1,2)+3*4,RGN_FRAC(1,2)+2*4,3*4,2*4},
	{ STEP8(0,16) },
	8*8*4/2
};

/* 8x8x8 tiles in 4 roms */
static const gfx_layout layout_8x8x8 =
{
	8,8,
	RGN_FRAC(1,4),
	8,
	{ STEP8(0,1) },
	{ RGN_FRAC(0,4) + 0*8, RGN_FRAC(1,4) + 0*8, RGN_FRAC(2,4) + 0*8, RGN_FRAC(3,4) + 0*8,
	  RGN_FRAC(0,4) + 1*8, RGN_FRAC(1,4) + 1*8, RGN_FRAC(2,4) + 1*8, RGN_FRAC(3,4) + 1*8 },
	{ STEP8(0,16) },
	8*8*8/4
};

static GFXDECODE_START( yunsung8 )
	GFXDECODE_ENTRY( "gfx1", 0, layout_8x8x8, 0, 0x08 ) // [0] Tiles (Background)
	GFXDECODE_ENTRY( "gfx2", 0, layout_8x8x4, 0,	0x40 ) // [1] Tiles (Text)
GFXDECODE_END



/***************************************************************************


                                Machine Drivers


***************************************************************************/


static void yunsung8_adpcm_int( const device_config *device )
{
	yunsung8_state *state = (yunsung8_state *)device->machine->driver_data;

	msm5205_data_w(device, state->adpcm >> 4);
	state->adpcm <<= 4;

	state->toggle ^= 1;
	if (state->toggle)
		cpu_set_input_line(state->audiocpu, INPUT_LINE_NMI, PULSE_LINE);
}

static const msm5205_interface yunsung8_msm5205_interface =
{
	yunsung8_adpcm_int,	/* interrupt function */
	MSM5205_S96_4B		/* 4KHz, 4 Bits */
};


static MACHINE_START( yunsung8 )
{
	yunsung8_state *state = (yunsung8_state *)machine->driver_data;
	UINT8 *MAIN = memory_region(machine, "maincpu");
	UINT8 *AUDIO = memory_region(machine, "audiocpu");

	state->videoram = auto_alloc_array(machine, UINT8, 0x4000);
	state->videoram_0 = state->videoram + 0x0000;	// Ram is banked
	state->videoram_1 = state->videoram + 0x2000;

	memory_configure_bank(machine, "bank1", 0, 3, &MAIN[0x00000], 0x4000);
	memory_configure_bank(machine, "bank1", 3, 5, &MAIN[0x10000], 0x4000);
	memory_configure_bank(machine, "bank2", 0, 3, &AUDIO[0x00000], 0x4000);
	memory_configure_bank(machine, "bank2", 3, 5, &AUDIO[0x10000], 0x4000);

	state->audiocpu = devtag_get_device(machine, "audiocpu");

	state_save_register_global_pointer(machine, state->videoram, 0x4000);
	state_save_register_global(machine, state->layers_ctrl);
	state_save_register_global(machine, state->videobank);
	state_save_register_global(machine, state->adpcm);
	state_save_register_global(machine, state->toggle);
}

static MACHINE_RESET( yunsung8 )
{
	yunsung8_state *state = (yunsung8_state *)machine->driver_data;

	state->videobank = 0;
	state->layers_ctrl = 0;
	state->adpcm = 0;
	state->toggle = 0;
}


static MACHINE_DRIVER_START( yunsung8 )

	/* driver data */
	MDRV_DRIVER_DATA(yunsung8_state)

	/* basic machine hardware */
	MDRV_CPU_ADD("maincpu", Z80, 8000000)			/* Z80B */
	MDRV_CPU_PROGRAM_MAP(main_map)
	MDRV_CPU_IO_MAP(port_map)
	MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)	/* No nmi routine */

	MDRV_CPU_ADD("audiocpu", Z80, 4000000)			/* ? */
	MDRV_CPU_PROGRAM_MAP(sound_map)
	MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)	/* NMI caused by the MSM5205? */

	MDRV_MACHINE_START(yunsung8)
	MDRV_MACHINE_RESET(yunsung8)

	/* video hardware */
	MDRV_SCREEN_ADD("screen", RASTER)
	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_SIZE(512, 256)
	MDRV_SCREEN_VISIBLE_AREA(0+64, 512-64-1, 0+8, 256-8-1)

	MDRV_GFXDECODE(yunsung8)
	MDRV_PALETTE_LENGTH(2048)

	MDRV_VIDEO_START(yunsung8)
	MDRV_VIDEO_UPDATE(yunsung8)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")

	MDRV_SOUND_ADD("ymsnd", YM3812, 4000000)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 1.0)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 1.0)

	MDRV_SOUND_ADD("msm", MSM5205, XTAL_400kHz) /* verified on pcb */
	MDRV_SOUND_CONFIG(yunsung8_msm5205_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.80)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.80)
MACHINE_DRIVER_END


/***************************************************************************


                                ROMs Loading


***************************************************************************/

/***************************************************************************

                                    Magix

Yun Sung, 1995.
CPU : Z80B
SND : Z80A + YM3812 + Oki M5205
OSC : 16.000

***************************************************************************/

ROM_START( magix )

	ROM_REGION( 0x24000, "maincpu", 0 )		/* Main Z80 Code */
	ROM_LOAD( "yunsung8.07", 0x00000, 0x0c000, CRC(d4d0b68b) SHA1(d7e1fb57a14f8b822791b98cecc6d5a053a89e0f) )
	ROM_CONTINUE(         0x10000, 0x14000             )

	ROM_REGION( 0x24000, "audiocpu", 0 )		/* Sound Z80 Code */
	ROM_LOAD( "yunsung8.08", 0x00000, 0x0c000, CRC(6fd60be9) SHA1(87622dc2967842629e90a02b415bec86cc26cbc7) )
	ROM_CONTINUE(         0x10000, 0x14000             )

	ROM_REGION( 0x200000, "gfx1", 0 )	/* Background */
	ROM_LOAD( "yunsung8.04",  0x000000, 0x80000, CRC(0a100d2b) SHA1(c36a2489748c8ac7b6d7457ad09d8153707c85be) )
	ROM_LOAD( "yunsung8.03",  0x080000, 0x80000, CRC(c8cb0373) SHA1(339c4e0fef44da3cab615e07dc8739bd925ebf28) )
	ROM_LOAD( "yunsung8.02",  0x100000, 0x80000, CRC(09efb8e5) SHA1(684bb5c4b579f8c77e79aab4decbefea495d9474) )
	ROM_LOAD( "yunsung8.01",  0x180000, 0x80000, CRC(4590d782) SHA1(af875166207793572b9ecf01bb6a24feba562a96) )

	ROM_REGION( 0x40000, "gfx2", 0 )	/* Text */
	ROM_LOAD( "yunsung8.05", 0x00000, 0x20000, CRC(862d378c) SHA1(a4e2cf14b5b25c6b8725dd285ddea65ce9ee257a) )	// only first $8000 bytes != 0
	ROM_LOAD( "yunsung8.06", 0x20000, 0x20000, CRC(8b2ab901) SHA1(1a5c05dd0cf830b645357a62d8e6e876b44c6b7f) )	// only first $8000 bytes != 0

ROM_END


/***************************************************************************

                                Cannon Ball

01, 02, 03, 04  are 27c020
05, 06, 07, 08  are 27c010
2 pals used

Z80b PROGRAM, Z80b SOUND

Cy7c384A
16MHz

***************************************************************************/

ROM_START( cannball )

	ROM_REGION( 0x24000, "maincpu", 0 )		/* Main Z80 Code */
	ROM_LOAD( "cannball.07", 0x00000, 0x0c000, CRC(17db56b4) SHA1(032e3dbde0b0e315dcb5f2b31f57e75e78818f2d) )
	ROM_CONTINUE(            0x10000, 0x14000             )

	ROM_REGION( 0x24000, "audiocpu", 0 )		/* Sound Z80 Code */
	ROM_LOAD( "cannball.08", 0x00000, 0x0c000, CRC(11403875) SHA1(9f583bc4f08e7aef3fd0f3fe3f31cce1d226641a) )
	ROM_CONTINUE(            0x10000, 0x14000             )

	ROM_REGION( 0x100000, "gfx1", 0 )	/* Background */
	ROM_LOAD( "cannball.01",  0x000000, 0x40000, CRC(2d7785e4) SHA1(9911354c0be192506f8bfca3e85ede0bbc4828d5) )
	ROM_LOAD( "cannball.02",  0x040000, 0x40000, CRC(24df387e) SHA1(5f4afe11feb367ca3b3c4f5eb37a6b6c4edb83bb) )
	ROM_LOAD( "cannball.03",  0x080000, 0x40000, CRC(4d62f192) SHA1(8c60b9b4b36c13c2d145c49413580a10e71eb283) )
	ROM_LOAD( "cannball.04",  0x0c0000, 0x40000, CRC(37cf8b12) SHA1(f93df8e0babe2c4ec996aa3c2a48bf40a5a02e62) )

	ROM_REGION( 0x40000, "gfx2", 0 )	/* Text */
	ROM_LOAD( "cannball.05", 0x00000, 0x20000, CRC(87c1f1fa) SHA1(dbc568d2133734e41b69fd8d18b76531648b32ef) )
	ROM_LOAD( "cannball.06", 0x20000, 0x20000, CRC(e722bee8) SHA1(3aed7df9df81a6776b6bf2f5b167965b0d689216) )

ROM_END


ROM_START( cannballv )

	ROM_REGION( 0x24000, "maincpu", 0 )		/* Main Z80 Code */
	ROM_LOAD( "yunsung1", 0x00000, 0x0c000, CRC(f7398b0d) SHA1(f2cdb9c4662cd325376d25ae9611f689605042db) )
	ROM_CONTINUE(            0x10000, 0x14000             )

	ROM_REGION( 0x24000, "audiocpu", 0 )		/* Sound Z80 Code */
	ROM_LOAD( "yunsung8", 0x00000, 0x0c000, CRC(11403875) SHA1(9f583bc4f08e7aef3fd0f3fe3f31cce1d226641a) )
	ROM_CONTINUE(            0x10000, 0x14000             )

	ROM_REGION( 0x200000, "gfx1", 0 )	/* Background */
	ROM_LOAD( "yunsung7",  0x000000, 0x80000, CRC(a5f1a648) SHA1(7a5bf5bc0ad257ccb12104512e98dfb3525babfc) )
	ROM_LOAD( "yunsung6",  0x080000, 0x80000, CRC(8baa686e) SHA1(831c3e2864d262bf5429dca6653c83dc976e610e) )
	ROM_LOAD( "yunsung5",  0x100000, 0x80000, CRC(a7f2ce51) SHA1(81632aca067f2c8c45488266c4489d9af24fb552) )
	ROM_LOAD( "yunsung4",  0x180000, 0x80000, CRC(74bef793) SHA1(6208580ce747cec3d410ce3c71e07aa570b9121d) )

	ROM_REGION( 0x40000, "gfx2", 0 )	/* Text */
	ROM_LOAD( "yunsung3", 0x00000, 0x20000, CRC(8217abbe) SHA1(1a459a816a1aa5b68858e39c4a21bd78ee78dcab) )
	ROM_LOAD( "yunsung2", 0x20000, 0x20000, CRC(76de1045) SHA1(a3845ee1874e6ec0ce26e6e73e4643243779e70d) )

ROM_END


/***************************************************************************

Rock Tris by Yunsung

Pcb marked Ys-rock 940712

pcb has no sound, the osc for the msm5205 has been cut so I don't know the frequency

Pcb has no markings in the sockets and eproms have anonymous stickers

2x z80
1x 16mhz
1x UA010
1x msm5205
1x fpga
1x dipswitch (there is place for another one, but the space is empty and
they jumpered the first position)

***************************************************************************/

ROM_START( rocktris )

	ROM_REGION( 0x24000, "maincpu", 0 )		/* Main Z80 Code */
	ROM_LOAD( "cpu.bin",     0x00000, 0x0c000, CRC(46e3b79c) SHA1(81a587b9f986c4e39b1888ec6ed6b86d1469b9a0) )
	ROM_CONTINUE(         0x10000, 0x14000             )

	ROM_REGION( 0x24000, "audiocpu", 0 )		/* Sound Z80 Code */
	ROM_LOAD( "cpu2.bin",    0x00000, 0x0c000, CRC(3a78a4cf) SHA1(f643c7a217cbb71f3a03f1f4a16545c546332819) )
	ROM_CONTINUE(         0x10000, 0x14000             )

	ROM_REGION( 0x200000, "gfx1", 0 )	/* Background */
	ROM_LOAD( "gfx4.bin",     0x000000, 0x80000, CRC(abb49cac) SHA1(e2d766e950df398a8ec8b6888e128ffc3bdf1ce9) )
	ROM_LOAD( "gfx3.bin",     0x080000, 0x80000, CRC(70a6ad52) SHA1(04cd58d3f885dd7c2fb1061f93d3ae3a418ad762) )
	ROM_LOAD( "gfx2.bin",     0x100000, 0x80000, CRC(fcc9ec97) SHA1(1f09452988e3fa976b233e3b458c7a60977b76aa) )
	ROM_LOAD( "gfx1.bin",     0x180000, 0x80000, CRC(4295034d) SHA1(9bdbbcdb46eb659a13b77c5bb26c9d8ad43731a7) )


	ROM_REGION( 0x40000, "gfx2", 0 )	/* Text */
	ROM_LOAD( "gfx5.bin",     0x00000, 0x20000, CRC(058ee379) SHA1(57088bb02c56212979b9119b773eedc31af17e50) )
	ROM_LOAD( "gfx6.bin",     0x20000, 0x20000, CRC(593cbd39) SHA1(4d60b5811118f3f22f6f3b300a4daec158456b72) )

ROM_END




/***************************************************************************


                                Game Drivers


***************************************************************************/

GAME( 1995,  cannball,  0,        yunsung8, cannball, 0, ROT0,   "Yun Sung / Soft Vision", "Cannon Ball (Yun Sung) (horizontal)",  GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
GAME( 1995,  cannballv, cannball, yunsung8, cannbalv, 0, ROT270, "Yun Sung / T&K",         "Cannon Ball (Yun Sung) (vertical)",  GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
GAME( 1995,  magix,     0,        yunsung8, magix,    0, ROT0,   "Yun Sung",               "Magix / Rock", GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
GAME( 1994?, rocktris,  0,        yunsung8, rocktris, 0, ROT0,   "Yun Sung",               "Rock Tris",    GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
